IDEAS home Printed from https://ideas.repec.org/
MyIDEAS: Login to save this paper or follow this series

Selection bias in innovation studies: A simple test

  • De Rassenfosse, Gaétan
  • Wastyn, Annelies

The study of the innovative output of firms often relies on a count of patents filed at one single office of reference such as the European Patent Office (EPO). Yet, not all firms file their patents at the EPO, raising the specter of a selection bias. Using a novel dataset of the whole population of patents by Belgian firms, we show that the single-office count results in a selection bias that affects econometric estimates of innovation production functions. We propose a methodology to evaluate whether estimates that rely on the single-office count are affected by a selection bias.

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL: http://econstor.eu/bitstream/10419/56018/1/688586813.pdf
Download Restriction: no

Paper provided by ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research in its series ZEW Discussion Papers with number 12-012.

as
in new window

Length:
Date of creation: 2012
Date of revision:
Handle: RePEc:zbw:zewdip:12012
Contact details of provider: Postal: L 7,1; D - 68161 Mannheim
Phone: +49/621/1235-01
Fax: +49/621/1235-224
Web page: http://www.zew.de/
Email:


More information through EDIRC

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

as in new window
  1. Saul Lach & Mark Schankerman, 2007. "Incentives and invention in universities," LSE Research Online Documents on Economics 3725, London School of Economics and Political Science, LSE Library.
  2. Nicolas van Zeebroeck, 2011. "The Puzzle of Patent Value Indicators," ULB Institutional Repository 2013/60729, ULB -- Universite Libre de Bruxelles.
  3. Gourieroux Christian & Monfort Alain & Trognon A, 1982. "Pseudo maximum lilelihood methods : applications to poisson models," CEPREMAP Working Papers (Couverture Orange) 8203, CEPREMAP.
  4. Heckman, James, 2013. "Sample selection bias as a specification error," Applied Econometrics, Publishing House "SINERGIA PRESS", vol. 31(3), pages 129-137.
  5. Bruno Crepon & Emmanuel Duguet & Jacques Mairesse, 1998. "Research, Innovation And Productivity: An Econometric Analysis At The Firm Level," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 7(2), pages 115-158.
  6. Stoneman, P, 1979. "Patenting Activity: A Re-evaluation of the Influence of Demand Pressures," Journal of Industrial Economics, Wiley Blackwell, vol. 27(4), pages 385-401, June.
  7. Howitt, Peter & Griffith, Rachel & Aghion, Philippe & Blundell, Richard & Bloom, Nick, 2005. "Competition and Innovation: An Inverted-U Relationship," Scholarly Articles 4481507, Harvard University Department of Economics.
  8. Cincera, Michele, 1997. "Patents, R&D, and Technological Spillovers at the Firm Level: Some Evidence from Econometric Count Models for Panel Data," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 12(3), pages 265-80, May-June.
  9. repec:fth:harver:1473 is not listed on IDEAS
  10. repec:fth:inseep:9833 is not listed on IDEAS
  11. de Rassenfosse, Gaétan & Dernis, Hélène & Guellec, Dominique & Picci, Lucio & van Pottelsberghe de la Potterie, Bruno, 2013. "The worldwide count of priority patents: A new indicator of inventive activity," Research Policy, Elsevier, vol. 42(3), pages 720-737.
  12. Crepon, B. & Duguet, E. & Mairesse, J., 1998. "Research Investment, Innovation and Productivity: An Econometric Analysis at the Firm Level," Papiers d'Economie Mathématique et Applications 98.15, Université Panthéon-Sorbonne (Paris 1).
  13. Nicolas van Zeebroeck & Bruno Van Pottelsberghe, 2011. "Filing strategies and patent value," ULB Institutional Repository 2013/60731, ULB -- Universite Libre de Bruxelles.
  14. Dirk Czarnitzki & Bernd Ebersberger & Andreas Fier, 2007. "The relationship between R&D collaboration, subsidies and R&D performance: Empirical evidence from Finland and Germany," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(7), pages 1347-1366.
  15. Leslie E. Papke & Jeffrey M. Wooldridge, 1993. "Econometric Methods for Fractional Response Variables with an Application to 401(k) Plan Participation Rates," NBER Technical Working Papers 0147, National Bureau of Economic Research, Inc.
  16. Gaétan de Rassenfosse & Bruno Van Pottelsberghe, 2008. "A Policy Insight into the R&D-Patent Relationship," Working Papers ECARES 2008_007, ULB -- Universite Libre de Bruxelles.
  17. Richard Gilbert, 2006. "Looking for Mr. Schumpeter: Where Are We in the Competition-Innovation Debate?," NBER Chapters, in: Innovation Policy and the Economy, Volume 6, pages 159-215 National Bureau of Economic Research, Inc.
  18. Yuichiro Uchida & Paul Cook, 2007. "Innovation and Market Structure in the Manufacturing Sector: An Application of Linear Feedback Models," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 69(4), pages 557-580, 08.
  19. Zvi Griliches, 1990. "Patent Statistics as Economic Indicators: A Survey," NBER Working Papers 3301, National Bureau of Economic Research, Inc.
  20. Thorwarth, Susanne & Kraft, Kornelius & Czarnitzki, Dirk, 2008. "The Knowledge Production of 'R' and 'D'," ZEW Discussion Papers 08-046, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
  21. Blundell, Richard & Griffith, Rachel & van Reenen, John, 1999. "Market Share, Market Value and Innovation in a Panel of British Manufacturing Firms," Review of Economic Studies, Wiley Blackwell, vol. 66(3), pages 529-54, July.
  22. Joaquín Azagra-Caro & Nicolas Carayol & Patrick Llerena, 2006. "Patent Production at a European Research University: Exploratory Evidence at the Laboratory Level," The Journal of Technology Transfer, Springer, vol. 31(2), pages 257-268, 03.
  23. Juan A. Correa, 2012. "Innovation and competition: An unstable relationship," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 27(1), pages 160-166, 01.
  24. Richard Blundell & Rachel Griffith & Frank Windmeijer, 1999. "Individual effects and dynamics in count data models," IFS Working Papers W99/03, Institute for Fiscal Studies.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:zbw:zewdip:12012. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (ZBW - German National Library of Economics)

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.